Improvement in gas-meters



UNITED STATES PATENT OFFICE.

EDWARD R. HALLAltL OENEW HAVEN, CONNECTICUT, AND THOMAS B. BARNARD, OF BROOKLYN, NEV YORK, ASSIGNORS TO E. R. HALLAM.

IMPROVEMENT IN GAS-M ETERS.

Specification ibi-ming part ol Letters Patent No. 9,580, dated 'February S, 17852..

.To @ZZ whom, t may concern.- Y

Be it known that we, EDWARD R. HALLAM, of New Haven, in the county of New Haven and State of Connecticut, and THOMAS B. BARNARD, of Brooklyn, Kings county, and State of New York, have invented a new and useful Machine for Measuring Gas by Volume; and we do hereby declare that the following is a full, clear, and exact description ofthe construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure 1 is a perspective view, Eig. 2 a side elevation, Fig. 3 a ground plan, Fig. 4 a horizontal section, and Fig. 5a vertical section, of the machine. Fig. 6 is a side elevation, Fig. 7 a ground plan, and Fig. 8 an end view, of the apparatus `for working the valves.

The saine letters of reference denote the same parts in each of the gures.

A is the external cylinder, to the bottom of which is fastened an inner cylinder, t, thereby forming an annular space, u.

B is a cylinder with a hollow ring, w, at the bottom, which serves as a ioatto counterbalance the weight of the cylinder B, the annular space u being filled with water or other liquid up to the line a:

l is the receivingpipe, through which the gas passes into the valve-box and thence into the cylinder B through the pipe g, or into the space above the cylinder B through the pipe n.

lc is the delivering-pipe, through which the gas passes from the space within the cylinder B through the pipef, or from the space above the cylinder B through the pipe m, to the valve-box y, and thence to the burners. y

h and t are the valves by which the gas is directed in its course through the pipes ga fm.

c is the beam that works the valves hy and t' by means of the rods a and Z1.

e is a hollow tube attached to the beam c by a center, o, on which it can vibrate.

Z is a bent wire (see Figs. 6, 7, and 8) for the tube e to strike against when it is raised or lowered by the cylinder B by means ofthe button w and cord o.

c is a stationary bearer fixed to the cylinder A, and carries the beam c, &c.

B is the center or pivot ofthe beam c.

E is a bracket carrying the end of the pivot B.

Operation: The gas, being received through the pipe Z into the valve-box fu, liows through the pipe g into the space within the cylinder B, but is prevented from passing into the pipe n by the valve 't' and prevented from iowing out of the cylinder B by the valve 7L until the cylinder B :is full, when it raises the hollow tube e, and then the mercury or other iiuid that is in the tube runs down to the other end, causes the tube to turn on its cen ter 0 and to strike the bent wire Z and turn the beam c, forcing down the valve i and rais ing the valve lt. Then the gas within the cylrinder B is allowed to iow out through the pipe f, and thence through the pipe k to the burners, and the gas flowing through the receiving-pipe Z is allowed to pass up the pipe a into the space above the cylinder B, but is prevented from passing out of this space by' the valve h till the cylinder B has descended to its required distance, when the cord c pulls down the tube e and allows the duid within it to run back to its former position, when it turns upon the center o, and, striking the lower part of the bent wire Z', turns the beam c back to its first or former position and changes the valves, so as to allow the gas to flow into the cylinder B and out of the space above it, and so on.

The quantity of gas passed through this machine is measured by the cylinder B, which may be made to work an index on the top of the machine by means of a wire or rod working through a stuffing-box on the top of the cylinder A, one end of which wire is attached to the index. The other end projects below the stuffing-box and into the cylinder A sufiiciently for the cylinder B to strike it and raise it when the said cylinder B gets to its full height, and thereby moving the index. The index is not shown on the drawings, pre- While the Supply enters the space above it, the gas being changed in its course or direction by valves, as herein described.

E. R. HALLAM. THOS. B. BARNARD. 

